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Pulse-Eight / libcec

USB CEC Adapter communication Library http://libcec.pulse-eight.com/
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cec-utils Ubuntu-Mate 18.04 Raspberry #470

Open Obbart opened 4 years ago

Obbart commented 4 years ago

Hi, I'm trying to use cec-utils on Raspberry Pi 3 running the arm64 version of Ubuntu Mate.

pi@pitest:~$ uname -a
Linux pitest 4.15.0-1047-raspi2 #51-Ubuntu SMP PREEMPT Fri Sep 13 16:39:06 UTC 2019 aarch64 aarch64 aarch64 GNU/Linux

but I get the following error:

pi@pitest:~$ cec-client
No device type given. Using 'recording device'
CEC Parser created - libCEC version 4.0.2
no serial port given. trying autodetect: FAILED

and 'cec-client' shows no support for Raspberry

pi@pitest:~$ cec-client -l
libCEC version: 4.0.2, compiled on Linux-4.4.0-142-generic ... , features: P8_USB, DRM, P8_detect, randr
Found devices: NONE

The only precompiled debs that I can find are for armhf and cannot be installed: cec-utils_4.0.4+dfsg1-2+rpi1_armhf.deb libcec4_4.0.2+dfsg1-2ubuntu1_arm64.deb I tried to follow the compile guide for Raspberry but in my distro there is no /opt/vc directory.

Any suggestions on how to compile on this distro? Thanks in advance

horich2001 commented 4 years ago

Hi, I've stumbled on your post while searching for a solution to make cec-utils/libcec to work on RPI4 running Ubuntu 20.04 LTS arm64. Could not find working binaries with PI option enabled so I had to compile them locally. First download and build "ARM side libraries used on Raspberry Pi. These typically are installed in /opt/vc/lib and includes source for the ARM side code to interface to: EGL, mmal, GLESv2, vcos, openmaxil, vchiq_arm, bcm_host, WFC, OpenVG."

git clone https://github.com/raspberrypi/userland.git cd userland/ ./buildme --aarch64

Then build the libCEC following the compile guide mentioned by you above I've changed the cmake command to include enable Raspberry Pi support:

cmake -DHAVE_RPI_API=1 -DRPI_INCLUDE_DIR=/opt/vc/include -DRPI_LIB_DIR=/opt/vc/lib ..

had to do this trick to make /opt/vc/include visible to the include path of the compiler: sudo ln -s /opt/vc/include/ /usr/local/include/aarch64-linux-gnu

also I had to add /opt/vc/lib to the LIBRARY_PATH: /etc/ld.so.conf.d/aarch64-linux-gnu.conf

final issue was that I could not run cec-client as normal user (failed to open vchiq instance) Had to fix the permission of: crw------- 1 root root 237, 0 Apr 1 17:23 /dev/vchiq

root@ubuntu:~# chown root:video /dev/vchiq root@ubuntu:~# chmod g+rw /dev/vchiq

Now all looks good: `ubuntu@ubuntu:~$ cec-client -l libCEC version: 5.0.0, git revision: libcec-4.0.4+61-4ef0486, compiled on 2020-05-16 18:38:38 by ubuntu@ubuntu on Linux 5.4.0-1008-raspi (aarch64), features: P8_USB, DRM, P8_detect, randr, RPi, AOCEC Found devices: 1

device: 1 com port: RPI vendor id: 2708 product id: 1001 firmware version: 1 type: Raspberry Pi`

`ubuntu@ubuntu:~$ cec-client -b No device type given. Using 'recording device' CEC Parser created - libCEC version 5.0.0 no serial port given. trying autodetect: path: Raspberry Pi com port: RPI

opening a connection to the CEC adapter... DEBUG: [ 346] Broadcast (F): osd name set to 'Broadcast' DEBUG: [ 347] Open - vc_cec initialised DEBUG: [ 347] logical address changed to Free use (e) NOTICE: [ 347] connection opened DEBUG: [ 347] processor thread started DEBUG: [ 347] << Broadcast (F) -> TV (0): POLL DEBUG: [ 347] initiator 'Broadcast' is not supported by the CEC adapter. using 'Free use' instead TRAFFIC: [ 347] << e0 DEBUG: [ 377] >> POLL sent DEBUG: [ 377] TV (0): device status changed into 'present' ........... ` I hope it helps. Have fun!

Cheers, Horia

clementnuss commented 3 years ago

Hi @horich2001 !

It helps a lot, was just able to compile this on RPi4 Ubuntu 20.04.2 👏

It would be a good idea to add a note to the RPi doc pointing here. If not done in 1 week, I'll try to do a PR with that.

igox commented 2 years ago

Hi @horich2001 ,

It helped a lot. I did succeed to compile and have the lib/binaries on Debian 10 Arm64.

But when I do pi@hyperhdr:~$ cec-client -l, cec-client command fails with the following message:

assertion failure:/build/raspberrypi-userland-Y644aj/raspberrypi-userland-2+git20211125~155417+14b90ff/interface/vmcs_host/vc_vchi_dispmanx.c:201:vc_vchi_dispmanx_init():success == 0

I do suspect something going wrong with the "ARM side libraries used on Raspberry Pi"... But not sure about it and where to start digging... Any insights?

Best regards, iGoX